Bell-ringer for locomotives.



l. HOWE.

BELL RINGER Fon Locomolvfs.

APPLICATION FILED MAY 1l. 1916.

Patented June 26, 1917.

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2 SHEETS-SHEET I.

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J. HOWE.

BELL RINGER FOR LocoMoTlvEs.

APPLICATION FILED MAY Il. 1916.

2 SHEETS-SHEET 2.

Patented June 26, 1917.

JOI-IN I-IOWE, OF AURORA, ILLINOIS.

BELL-RINGER FOR LOCOMOTIVES.

Continuation in part of application Serial No. 13,058, led March 8, 1915.

Serial No. 96,794.

To all 'whom t may concern:

Be it known that I, Jol-IN Howe, a citizen of the United States, residing at Aurora, in the county of Kane and State oli' Illinois, have invented certain new and useful Improvements in Bell-Ringers t'or Locomotives, of which the following is a specification. y

This invention relates to bell ringers of a type especially adapted for use in ringing the bell of a locomotive, and the present invention is a continuation of the invention described and claimed in my prior application, Serial N o. 13,058, hled March Sth, 1915, as to all subject matter common to the two applications.

The y bell ringers heretofore used have caused great diliculty by reason of the fact that after the bell was actuated to turn in a particular direction it had a tendency to turn completely over, thereby interfering with the successive operation of the bell and the regularity of the sounds emitted thereby. If the power applied to the bell is reduced suiliciently to prevent the same turning over, it is found that the bell cannot be started from rest without the use of some supplementary means such as a bell rope- The principal object of the present invention is to provide improved means for overcoming the above dilficulties so that the bell will be preventedA from turning completely over after being actuated, regardless of the force applied to the bell ringing means to operate the same. A further object is to provide means for limiting the angular movement of the bell and cushioning the same at the ends of such movement. Another object is to provide means :for applying a gradual increasing resistance to the movement of the bell after a predetermined degree of movement thereof, whereby the' bell will iinally be brought to rest. Still another o bj ect is to provide means for retarding the upward movement of the bell about its pivotal axis, and for retarding its return movement without preventing the complete return movement of the bell, due to its weight. A further object is to provide a braking mechanism for bringing the bell to rest after it has been actuated, said braking means being arranged to be returned to normal position by the action of the bell. A further object is to pro-vide means for limiting the angular movement of the bell, which Specification of Letters Patent.

Patented J une 26, 1911"?.

This application filed May 11,

means may be adjusted to regulate its effect on the movement of the bell. A still further object is to provide a simplified form of braking mechanism which may be easily assembled and repaired, and which may be readily attached to various bellsl and'bell ringers.

These and other objects of the invention will appear more clearly from the following specification, taken in connection with the accompanying drawings, in which one embodiment of the invention is illustrated.

In the drawings; y

Figure l is an elevation ot' a bell and bell frame showing my improved bell ringing mechanism in operative relation thereto, the bell being shown in normal inoperative position;

Fig. 2 is an enlarged elevation of the bell ringing and braking' broken away, tion;

Fig. 3 is an enlarged front view oit' the apparatus partly in section on the line 3 3 ot' Fig. 2; l

Fig. 4 is a plan view of the strap or cylinder head for limiting the movement of the piston; and

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 2.

In the drawings the usual bell frame 10 is mo-untedon top of a locomotive or other support l1, and the arms of said bell frame are provided with alining journal bearings 12 and 13, in which are journaled the bearings 14 and 15, respectively, of the bell yoke 16. The yoke 16 is of the usual form, comprising a U-shaped portion extending transversely to the axis of the bearings 1land 15, and 'having the central portion thereof arranged to form a rigid connection with the bell 17. As will be well understood by those skilled in the art, the bell yoke 16 and bell 17 are so supported and arranged that the bell normally occupies a position in a vertical plane, as shown in Fig. 1, and automatically returns to said position by virtue of its weight after an angular movement has been imparted thereto. These parts are also preferably arranged so that the force necessary to move the bell from normal position will be a minimum. The bell tongue 18 is pivotally mounted in the bell on an axis parallel to the axis of the bearings 14C and 15, so that when the bell yoke is rotated in its showing certain details in secmeans with parts bearings in either direction, said tongue will strike the bell and sound the same. A shaft 19 is formed integrally with the bearing 'let and extends outwardly in alinement therewith, having rigidly secured to the end thereof suitable means for effecting the actuation of the bell. lThese parts form no part of the present invention and they are illustrated and described as a basis for eX- plaining the construction and operation of my improved bell ringing and braking means.

Secured to the arm of the bell frame beneath the shaft 19, is a bracket .25 having an arc shaped portion 2G which conforms to the shape of the arm of the bell frame, and is secured thereto by means of the bolts 27 and a stud 28. rlhe bracket 25 is also provided with a downwardly extending flange or head Q9, which is provided with a rectangular slot or aperture 29a adapted to receive the rectangular lug 39" formed on the projecting part 30'LL of the cylinder 30. The lateral walls of the lug are arranged to fit closely the vertical walls of the slot, but the vertical dimension of the lug is less than the vertical dimension of the slot in order to permit the vertical adjustment of the cylinder with respect to the bracket or bell frame. A plate or washer 29h fits over the outer end of the aperture 29, and a stud 29, passing through this plate and threadedly engaging the lug 30", serves to clamp the cylinder' in rigid engagement with the flange 29 of the bracket. The projecting part of the cylinder is further provided with overlapping ears or tongues 30C, which engage the lateral sides of the flange to prevent relative displacement of the cylinder and bracket. A pair of adjusting screws 31l and 31D vertically engage the upper and lower walls, respectively, of the slot 29a, and are arranged to coact with the upper and lower walls, respectively, of the lugs 30", so that the latter member is rigidly secured against vertical displacement with respect to the bracket. When the stud 29 is loosened, the screws 3la and 31h may be adjusted to effect a vertical adjustment of the cylinder for a purpose to be hereinafter described.

A piston 32 is reciprocably mounted in the chamber 83 of the cylinder, and the lowerJ portion 35 of said chamber is enlarged to prevent the formation of shoulders on the walls of the chamber at the lower limit of travel of the piston. The piston is provided with the usual piston rings 3G, and the lower end of the piston is provided with a central downwardly extending projection 37 which is adapted to engage the upper extremity of the valve stem 38, which is reciprocably mounted in the lower end of the cylinder 30, and which controls the valve 39 mounted in the chamber t0 of the can 4H,

which cap threadedly engages the lower reduced end of the cylinder. This cap may be adjusted upwardly and downwardly to vary the size of the chamber' 40, and a locknut ft2 may be employed to secure the cap in adjusted position. The valve stein 38 has the opposite sides thereof milled off so as to provide apertures 43, which form a communication between the chamber 40 and the chamber 33 of the cylinder when the valve 39 is in the position shown, for instance, in Fig. e A duct lll communicates with the chamber 4-0 through the wall of the cap ill, and the lower part of said duct is adapted to form a. threaded connection with a pipe +15 which communicates with a supply of compressed fluid, or the like, such as the compressed air tank of the air-brake system. This pipe is provided with a valve 46, by means of which the admission of compressed fluid to the cylinder is controlled.

t will be apparent that when the valve 4:6 is opened to admit compressed uid to the chamber l0, the valve 39 being in its open position corresponding to the lowermost position of the piston 32, as shown in Fig. 3, the compressed fluid will pass upwardly through the apertures i3 into the enlarged portion 35 of the chamber 33, and thereby operate to drive the piston 32 upwardly in the cylinder. During the first portion of this upward movement ofV the piston, the pressure of the compressed Huid on the upper and lower sides of the valve and valve stem will be substantially equal, so that the said valve will remain in the position shown in Fig. 3 until the lower extremity of the piston has passed the port 47, which is provided in the cylinder wall and which communicates, preferably, with the atmosphere. l/Vhen the piston passes the port e7, so as to provide a communication between the chamber 38 and the atmosphere, the pressure upon the upper side of the valve and valve stem will be lower than the pressure upon the lower sides thereof, and the valve will therefore move upwardly to close the apertures lf3, whereupon the pressure upon the lower face of the piston will cease. The piston actuated in this manner is employed for operating the bell-ringing mechanism in the manner hereinafter to be described.

Mounted upon the projecting bell shaft 19 is a crank member 50, having a projecting hub portion 5l engaged by the set screw 52, by means of which a rigid connection-is formed between the crank member and the shaft, so that the rotation of the crank member will effect the rotation of the shaft, and corresponding angular movement of the bell. The crank member/is provided with a suitably located aperture 53, which is engaged by the crank pin 54. This crank pin has a collar 54a engaging` one side of the crank member, and a nut 55 engaging the opposite extremity thereof, so as to secure the crank pin in fixed relation to the crank member. 'lhe effective crank arm of the mechanism is then the distance between the center of the pin 5a and the axis of the shaft 19. The crank member is actuated by the piston 82, through the pin 54C, by means of the piston rod 56. This piston rod is provided at its lower extremity with a semi-spherical part 56a, which is adapted to form a ball and socket connection with the walls of theA recess 32@ formed in the upper end of the piston. rThe piston rod also comprises a detachable head or connecting member 56D, which has a longitudinally extending slot 57 formed therein to receive the projecting crank pin 541. The portion 561 of the piston rod is threadedly engaged by the body portion thereof, and the parts are secured in adjusted positionby means of the lock nut 58. The crank member 50 is so arranged on the shaft 19 that the crank pin will be slightly ofi' center when the bell is in normal inoperative position, as shown in Fig. 3, so that when the piston 32 is moved upwardly by the action of the compressed fluid the motion thereof will be imparted through the piston rod to the crank pin, and will effect the rotation of the crank member without the necessity of giving the bell and crank member an initial movement, which would be necessary if the crank pin were in head center position when the bell is at rest. It will be apparent that a rotative impulse is imparted to the crank member and bell at the beginning of the stroke which will be sufficient to carry the bell through the, desired angular movement, and after said impulse has been imparted thereto the bell will be permitted to rotate freely without any retardation by the piston or piston rod, since the crank pin will move freely in the slot 57 of the piston rod, while the piston and piston ro'd will be free to return to normal position after the valve 39 has closed. To prevent the piston from being projected out of the cylinder, and to prevent the total disengagement of the piston and piston rod, a strap or cylinder head 59 is provided, having a longitudinal slot 59EL therein which permits the necessary angular movement of the piston rod, and having flanges 59b which are secured by bolts 59c to the flanges 30d of the cylinder.

It will be seen that the central portion of the cylinder head 59 is projected upwardly to permit the necessary movement of the piston. After the bell has been actuated in one direction the weight thereof will operate to return the same to normal position, and during such movement the pin 54 will coact with the lower end of the slot 57 and force the piston and piston rod downwardly until they occupy their normal lowerniost positions, wherein the valve 39 will be moved to open position by the coaction of the piston with the upper extremity of the valve stem. If the parts do not operate to open the valve as the crank pin passes through head center position, the effective length of the piston rod may be increased by adjusting the member 5G with respect to its extension tb, thereby causing the piston rod to force the piston down until it opens the valve. The momentum of the bell will be sufficient to carry the crank pin and crank member past head center position, and the compressed fluid admitted to the cylinder by the opening of the valve during the movement of the crank pin past such position will force the piston upwardly and actuate the bell in the opposite direction of rotation., ln this way the actuation of the bell is continued indefinitely while the valve 46 is open, without the necessity of any attention on the part of the operator, the valve 39 being opened automatically at intervals, so that rotative impulses are automatically imparted to the bell to move the same alternately in opposite directions of rotation,

ln order to prevent the bell turning' over after a rotative impulse has been imparted thereto, it is desirable to provide some means for bringing' the bell to rest and cushioning its movement after it has passed through the desired arc of rotation. For this purpose there is provided an eccentric member GO, which is preferably carried by and forms a part of the crank member 5f). rlhe eccentric member is circular in form and it is formed on the member 59, so that its cylindrical, peripheral surface is symmetrically located with respect to the center line connecting the axis of the shaft 19 with the axis of the crank pin 54e. The opposite sides of the eccentric 50 are provided with radially extending flanges 61, and between these flanges there is mounted a brake inember G2 which comprises a brake shoe having two parts 62a and 621 and a flexible brake strap 63, which is secured to the brake shoe by means of studs G4. The uppermost extremities of the members 62a and 62h are spaced apart, and the lower extremities thereof may terminate preferably slightly below the center line of the eccentric when the brake shoe is out of engagement therewith. The opposite arms 632L of the brake strap converge downwardly, and their lower extremities terminate in parallel parts which are secured by means of a stud 65 to the upwardly projecting flange 66av of the head G6" carried by the brake stem GG. This brake stem passes through and is sli dably mounted in a suitable vertically extending aperture formed in the projecting part 30 of the cylinder and preferalily has a threaded engagement with the head GG. being held fixed with respect to the head by a pin 6G. The

lower extremity of this aperture is counterbored, as shown at 67, and a coil spring 68 is mounted on the stem engaging the shoulder of the upper end of the counter-bore 67. The brake stem extends a considerable distance below the part 30a of the cylinder, and the lower end thereof is threaded to be engaged by the nut 69, which may be adjusted on the stem to vary the compression of the spring 68, and which may be locked in adjusted position by means of a suitable pin 70. The stem is provided with a plurality of suitable apertures to be engaged by the pin with the nut in different positions. When the nut is fixed on the stem it may be engaged by a wrench to effect the threaded engagement of the stem with the head 66.b The upper extremity of the aperture through the part 30CL of the cylinder is also counter-bored, and is threaded to be engaged by the threaded adjustment member 75, which has an upper extremity a adapted to be engaged by a wrench, or the like, and which forms a seat for the head 66b of the brake. stem. This adjustment member may be rotated to effect an upward or downward movement thereof with respect to the part 30, thereby regulating the initial position of the head 66b and the corresponding initial position of the brake member 62 with respect to the eccentric member which cooperates therewith.

It will be apparent from the foregoing description that the eccentric member, brake member, and parts associated therewith,

'form a braking means for limiting the angular movement of the bell, and for cushioning the same at the extremities of its movement. Vhen the bell is in its normal inoperative position, and the crank and eccentric are in corresponding normal positions, there is a clearance 7 6 between the uppermost part of the peripheral surface of the eccentric and the lowermost part of the inner arcuate surface of the brake shoe, and the brake member is supported in a vertical position by the lateral sides of the eccentric member, which coact loosely therewith, so that during the first part of the angular movement of the bell the brake shoe will offer no appreciable resistance to the free upward movement of the bell, but when the bell has passed to a point adjacent the desired limits of its angular movement the annular surface of the eccentric will engage and coact operatively with the inner Varcuate surface of the brake shoe, so that the frietional contact between these parts will offer a resistance to the continued movement of the bell. At the same time the pressure exerted on the brake member by the upward movement of the eccentric will cause a squeezing action of the two parts of the brake shoe on the opposite sides of the eccentric, this action being permitted by the iexible brake strap 63,

which operates to cause the opposite parts of the brake shoe to move toward each other, and thereby exert a vise-like pressure on the eccentric, while at the same time offering a frietional resistance to the rotation of the eccentric. As the upward movement of the bell and crank member continues the eccentric will rotate in the brake member, and at the same time the bodily upward movement of the eccentric about the shaft 19 as an thereby moving the head 66b upwardly from its position on the adjustment member 75, so that the spring 68 will be compressed and a gradually increasing resistance offered to the continued upward movement of the brake member. As the resistance to the upward movement of the brake member increases, the frietional resistance offered by the brake shoe to the rotation of the eccentric and the squeezing 'action of the brake shoe members on the eccentric increase until nally the increased pressure and increased frietional resistance are sufiicient to bring the bell to rest. After the bell has been brought to rest at the end of its angular movement in one direction, vthe weight of the bell will operate to return the braking apparatus and the bell-actuating means to normal positions, although the brake will offer a limited L retardation to the return movement of the bell, which serves to increase the eiciency of its operation. After the crank pin has passed through its head center position, as previously explained, the bell will rotate in the opposite direction until the upward movement vof the crank member causes the eccentric to coact with the brake shoe, whereby the movement of the bell will be cushioned and it will finally'be brought to rest.

The construction of the brake member, comprising a flexible brake strap and a brake shoe comprising a plurality of parts spaced apart from each other, permits the squeezing action previously described, and operates at the same time to permit an automatic compensation for the wear which takes place on the inner surface of the brake shoe members, since as the wear increases the brake member may be lowered bodily until the parts of the brake shoe have the desired ini- Y tial position with respect to the eccentric. It will be seen that the brake member and eccentric, with other parts coperating therewith, constitute what may be termed arotary brake, in which one of the coacting parts is an angularly movable-element, as distinguished from a brake in which the parts reciprocate with respect to each other. Then it is desired to replace any of the parts of the brake member, or for other reasons, the brake member may be detached from the eccentric by stretching the brake strap in a horizontal plane until the parts .axis will carry the brake member upwardly, Y

of the brake shoe clear the projecting flanges 61 of the eccentric. The brake member may then be removed very readily, and may be replaced by reversing this operation.

When the braking device is first assembled with respect to the bell-ringing means or after the continued use of the device, it may be necessary to adjust the brake member vertically with respect to the cylinder and bell frame in order to secure the desired degree of clearance 76 between the uppermost part of the peripheral surface of the eccentric and the inner arcuate surface of the uppermostv part of the brake shoe when the bell-ringing means is in its normal inoperative position, as shown, for instance, in Figs. 2 and 3. This adjustment may be effected by means of the adjustment member 75, which may be moved upwardly and downwardly with respect to the part 30LL of the cylinder. However, the member 75 may be retained in fixed position, or eliminated entirely, and the adjustment eiected by moving the cylinder bodily with respect to the bracket and bell frame, thereby causing a corresponding bodily movement of the brake member in order to secure the desired degree of clearance. This bodily movement of the cylinder is effected by releasing the stud 29c slightly and manipulating the adjusting screws 31@L and 31h to cause a sliding movement of the cylinder upwardly or downwardly, and a corresponding movement of' the lug 30b in the slot 29a. After the desired adjustment has been eected the stud 29 and screws 31 and 31b may be tightened to secure the cylinder in rigid fixed position. Although either of the adjustments just described may be used for effecting the location of the brake member in the desired initial position, I now prefer to adjust the cylinder bodily with respect to the frame: this adjustment has the advantage that it is not likely to be tampered with by the operators of the device.

In addition to the adjustments just described the nut 69 may also be regulated in its position to vary the compression of the spring 68, and the corresponding degree or rate of increase of the braking action.

The present invention is covered broadly by the claims of my co-pending application, Serial No. 13,058, filed March 8, 1915.

Although I have shown and described a particular embodiment of the invention for purposes of illustration, it will be understood that it may be constructed in various other forms without departing from the scope thereof as defined in the appended claims.

I claim 1. In a device of the class described, a pivotally mounted bell, and a rotary friction brake for 'bringing said bell to rest after a rotative impulse has been imparted thereto,

2. In combination, a pivotally mounted bell, a rotatably mounted member actuated upon movement of said bell, and bra-king means adapted to grip said rotatably mounted member for bringing said bell to rest after a rotative impulse has been imparted thereto 3. In combination, a pivotally mounted bell, a circular member mounted eccentrically on an axis coincident with the axis of said bell, and braking means adapted to engage frictionally said circular member to control the angular movement of said bell.

4. In combination, a pivotally mounted bell, a circular member mounted eccentrically on an axis coincident with the axis of said bell, braking means adapted to engage frictionally said circular member to control the angular movement of said bell, and means to vary the normal position of said braking means.

5. In combination, a pivotally mounted bell, means for ringing said bell, an eccentric member actuated by the movement of said bell, and braking means adapted tocoact with the peripheral surface of said eccentric member to control the angular movement of the bell.

6. In combination, a pivotally mounted bell, means for ringing said bell, an eccentric member actuated by the movement of said bell, `and a brake shoe adapted to coact with the peripheral surface of said eccentric member to control the angular movement ofthe bell, said brake shoe being inoperative until the bell has moved through a predetermined angle.

7. In combination, a pivotally mounted bell, a rotatably mounted member operatively connected to and movable when said bell is actuated, a brake-strap extending around said rotatably mounted member and having parts adapted to engage the peripheral surface thereof, and supporting means to which said brake-strap is connected.

S. In combination, a pivotally mounted bell, means to ring said bell, an eccentric member actuated by the movement of said bell, a brake shoe adapted to coact with said eccentric member, said brake shoe being out of operative engagement with the eccentric member when the bell is in normal inoperative position, and means to regulate the degree of movement of the bell necessary to bring said brake shoe into opera-tive engagement with the eccentric member.

9. In combination, a pivotally mounted bell, an angularly movable brake member actuated by the movement of said bell, and a brake shoe adapted to coact operatively with said brake member after a predetermined angular movement thereof.

10. In combination, a pivotally mounted bell, an angularly movable member actuated by the movement of said bell, and a brake member comprising relatively movable parts arranged to engage and grip the surface of the movable member to cushion and limit the angular movement of the bell.

11. In combination, a pivotally mounted bell, an angularly movable member actuated by the movement of said bell, a brake shoe adapted to coact with said angularly movable member, and means to regulate the pressure of said brake shoe on the movable member.

12. In combination, a pivotally mounted bell, an eccentric member actuated by the movement of said bell, a brake strap eX- tending around said eccentric member and carrying a part adapted to coact With a part of the annular surface thereof after said eccentric member has moved through a predetermined angle, and means to vary the point of engagement of said brake strap with the peripheral surface of said eccentric member.

13. In combination, a pivotally mounted bell, an eccentric member actuated by the movement of said bell, a brake shoe comprisin a plurality of parts adapted to engage rictionally the annular surface of said eccentric after a predetermined movement of said bell, and supporting means for said brake shoe arranged to effect a gripping of said eccentric member in addition to the frictional engagement thereof.

14. In combination, a pivotally mounted bell, an eccentric member actuated by the movement of said bell, a brake shoe comprising a plurality of parts adapted to engage a part of the annular surface of said eccentric member, a flexible strap extending around said eccentric member and secured to said brake shoe, andmeans for resiliently supporting said strap.

15. In combination, a pivotally mounted bell, an eccentric member actuated by the movement of said bell, a brake shoe adapted to engage a part of the peripheral surface of said eccentric member, a brake strap secured to said brake shoe and adapted to extend around said eccentric member, means to vary the point of engagement of said` brake shoe With the peripheral surface of said eccentric member, and means connected to said strap to vary the pressure of said brak shoe on said eccentric member.

16. In combination, a pivotally mounted bell, an eccentric member actuated by the angular movement of said bell, a brake member having parts adapted to conform to the annular surface of said eccentric member,

said brake member being normally arranged to provide a clearance between the eccentric member and the coacting surfaces of the brake memberso that said brake `member Will contact With said eccentric member only after a predetermined angular movement of the latter, and resilient means vto permit continued angular movement of said eccentric member after the latter has frictionally engaged said brake strap.

17. In combination, a pivotally mounted bell, van eccentric member actuated by lthe angular movement of said bell, a brake member adapted to engage operatively said eccentric member after a predetermined an-` gular movement thereof, a supporting member, a brake stem resiliently and Vslidably mounted on said supporting member, and means to connect said brake stem with said brake member. Y

18. In combination, a pivotally mounted bell, an eccentric member actuated by the angular movement of said bell, a brake member adapted to engage operatively said eccentric member after a predetermined angular movement thereof, a supporting member, a brake stem resiliently and slidably mounted on said supporting member, means to connect said brake member With said brake stem, and adjustable'means to vary the normal positions of said stem and brake member.. A

19. In combination, a pivotally mounted bell, an eccentric member actuated by theV angular movement of said bell, abrake shoe adapted to coact With the peripheral surface of said eccentric member to effect an increasing resistance to the angular movement thereof, a supporting member, means for supporting'said brake shoe from saidV supporting member, and Ymeans for adjusting said supporting member With respect to said eccentric .memben Y 20. In combination, a`pivotall`y mounted bell, a crank member pivotally connected to said bell and comprising an eccentrically l0- cated annular surface, means operatively connected With said crank member to impart a rotative impulse thereto, a brake shoe adaptedV to coact with the eccentric surface of said vcrank member to eii'ect an increasing resistance to the angular movement thereof after the bell has swung through a predetermined are, and an adjustment member operatively connected With the brake shoe to vary the operative engagement thereof with said eccentric surface.

21'. In combination, a pivotally'mounted bell, an eccentric member actuated'by the movement of said bell, a brake shoe adapted to coact With said eccentric member, a supporting member, a brake stem slidably mounted in said supporting member, a coil V spring mounted on said brake stem to oppose the movement thereof, and` means connectlng the brake stem With the brake shoe, the

movement of said brake shoe under the inmeans, and means for connecting said secluence of the eccentric member bemg oponol-namecl member Wlth said supportlng l@ posed by the action of said coil spring. means for controlling the angular movement 22. In combination, a pvotally mounted of said bell. 5 bell, a circular member mounted eccentr- In testimony whereof, I have subscribed cally to rotate When said bell s actuated, a my name. member coactng With the peripheral surface of said circular member, supporting JOHN I'IOW'E.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, ID. C. 

